In any J2EE application transaction management is one of the most
crucial requirements of the application. Given the complexity of
today's business requirements, transaction processing occupies one of
the most complex segments of enterprise level distributed applications
to build, deploy and maintain. JTS specifies the implementation of a
Java transaction manager. JTS specifies the implementation of a
Transaction Manager which supports the Java Transaction API (JTA) 1.0
This transaction manager supports the JTA, using which application
servers can be built to support transactional Java applications.
Internally the JTS implements the Java mapping of the OMG OTS 1.1
specifications. The Java mapping is specified in two packages:
org.omg.CosTransactions and org.omg.CosTSPortability. The JTS thus
provides a new architecture for transactional application servers and
applications, while complying to the OMG OTS 1.1 interfaces internally.
This allows the JTA compliant applications to interoperate with other
OTS 1.1 complaint applications through the standard IIOP. Java-based
applications and Java-based application servers access transaction
management functionality via the JTA interfaces. The JTA interacts with
a transaction management implementation via JTS. Similarly, the JTS can
access resources via the JTA XA interfaces or can access OTS-enabled
non-XA resources. JTS implementations can interoperate via CORBA OTS
interfaces.
The JTA specifies an architecture for building
transactional application servers and defines a set of interfaces for
various components of this architecture. The components are: the
application, resource managers, and the application server. The JTA
specifies standard interfaces for Java-based applications and
application servers to interact with transactions, transaction
managers, and resource managers JTA transaction management provides a
set of interfaces utilized by an application server to manage the
beginning and completion of transactions. Transaction synchronization
and propagation services are also provided under the domain of transaction management.
In
the Java transaction model, the Java application components can conduct
transactional operations on JTA compliant resources via the JTS. The
JTS acts as a layer over the OTS. The applications can therefore
initiate global transactions to include other OTS transaction managers,
or participate in global transactions initiated by other OTS compliant
transaction managers.
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